动态IP访问限静态IP的API：免费静态IP及中转服务咨询

Hey there, I get your frustration—dealing with API whitelisting when your host only gives dynamic IPs is such a pain. Let’s go through practical, no-credit-card options to fix this:

1. Free Cloud Services with Static IPs (No Credit Card) #

These platforms let you host your script or get a static IP without needing to input payment details:

• InfinityFree: Offers free web hosting with a static IP (you’ll need to bind a domain, but they provide free subdomains if you don’t have your own). You can deploy your Python script via their file manager or use their limited but functional terminal to run it. Just add their static IP to your API’s whitelist once, and you’re good to go.
• FreeHostingNoAds: Similar to InfinityFree, with static IPs included in their free tier. They support Python scripts and have a straightforward interface for deployment.

Note: Some free services have resource limits (like monthly bandwidth caps), so keep an eye on usage if your script makes frequent API calls.

2. Cloudflare Workers as a Middleman (Perfect for API Forwarding) #

This is my go-to workaround for situations like yours. Cloudflare Workers let you create a lightweight serverless function that acts as a proxy: it uses Cloudflare’s static IPs to access your target API, then forwards the response to your PythonAnywhere script. Best of all, it’s free for most use cases and no credit card is needed.

Here’s how to set it up:

1. Sign up for a Cloudflare account (no payment info required).
2. Create a new Worker:
   • Go to the Workers tab in your Cloudflare dashboard and click "Create a Worker".
   • Replace the default code with something like this (customize it for your API):

     addEventListener('fetch', event => {
       event.respondWith(handleRequest(event.request))
     })
     
     async function handleRequest(request) {
       // Replace with your target API endpoint
       const targetApiUrl = 'https://your-api-domain.com/your-endpoint';
       // Add any required API headers (like your auth key) here
       const apiHeaders = new Headers({
         'Authorization': 'Bearer YOUR_API_KEY',
         'Content-Type': 'application/json'
       });
     
       // Forward the request to the target API using Cloudflare's IP
       const apiResponse = await fetch(targetApiUrl, {
         method: request.method,
         headers: apiHeaders,
         body: request.body
       });
     
       // Send the API's response back to your PythonAnywhere script
       return new Response(apiResponse.body, apiResponse);
     }
     

3. Add Cloudflare’s IP ranges to your API’s whitelist. You can find these ranges by searching for "Cloudflare IP ranges"—just copy the list and add them to the API’s whitelist.
4. Update your PythonAnywhere script to call your Cloudflare Worker’s URL instead of the target API directly.

This way, all API requests go through Cloudflare’s static IPs (which are whitelisted), and your script gets the data it needs without worrying about dynamic IP changes.

3. Local Script with DDNS (If You Can Keep Your PC Running) #

If you can run your script on a local computer that’s always online, you can use a free DDNS service to map your dynamic home IP to a fixed domain. Then add your home IP (or the DDNS domain’s resolved IP) to the API’s whitelist. Most DDNS services (like No-IP) are free, and you can set up a small script to keep your IP updated automatically.

The downside is your computer has to stay on 24/7, but it’s a solid free option if you have the hardware for it.

Honorable Mention: Oracle Cloud Free Tier (Requires Credit Card, But No Charges) #

If you’re open to verifying with a credit card (they won’t charge you unless you exceed free limits), Oracle Cloud offers a permanent free tier with a VM instance that includes a static public IP. It’s a powerful option for running scripts long-term, but I know you said you don’t have a credit card, so this is just a backup.

内容的提问来源于stack exchange，提问作者Ankit Sangwan